The 2005 version had nothing to do with videos, but in 2006, a friend suggested that I make videos to supplement these exercises that I was creating. I soon began programming some practice problems for them to do, and that first software I wrote was the earliest version of Khan Academy. More than anything, I had a lot of fun connecting with them on a human level and being able to help them cover gaps in their knowledge that had accumulated over time. That worked out really well, and word spread through the family like a wildfire, until soon, there were 10 or 15 cousins, family, and friends from around the country that I was helping. Naturally, I offered to tutor her, remotely. As that was getting off the ground, one of my cousins, who was 12 years old, said that she needed help with math.

In 2004, my original background was in tech, and then after business school I ended up working as an analyst at a hedge fund. How did you found Khan Academy, and how did it grow to the product it is now?

Sal khan background